Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870935 | Spark ignition timing control system for internal combustion engine with acceleration responsive spark advance retarding control | — | 1989-10-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870935 | Spark ignition timing control system for internal combustion engine with acceleration responsive spark advance retarding control | — | 1989-10-03 |